Adjustment nut



FIG. 1 is a perspective view of the adjustment nut in accordance with the present invention;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a right side view thereof;

FIG. 5 is a left side view thereof;

FIG. 6 is a top view thereof; and,

FIG. 7 is a bottom view thereof.

The elements depicted in broken line in the various figures are included for environmental purposes only, and form no part of the claimed design. 

The ornamental design for an adjustment nut, as shown and described. 